The digestive system

The movement of digestion products, electrolytes, vitamins, and water across the GI tract epithelium and into the underlying blood and lymphatic vessels is called

All of the following are organs of the digestive system except the A) spleen B) liver C) tongue D) esophagus

Which selection includes only accessory digestive organs? A) salivary glands, thyroid gland, pancreas, liver B) stomach, duodenum, pancreas, gallbladder C) gallbladder, liver, pancreas, salivary glands D) liver, thyroid gland, gallbladder, spleen

Movements in the small intestine that churn the materials being digested and mix them with intestinal secretions are called

Which term describes the wave of muscular contraction that moves material through the GI tract toward the anus? A) peristalsis B) pendular motility C) segmentation D) haustral churning

Digestive functions of the tongue include A) manipulating and mixing ingested materials during chewing B) helping compress partially digested food to form a bolus C) assisting in the swallowing process D) all of the above

The three pairs of multicellular salivary glands that secrete into the oral cavity are the ____________ glands. A) alpha, beta, and gamma B) parotid, submandibular, and sublingual C) palatine, lingual, and pharyngeal D) serous, mucous, and mixed

What is the mineralized matrix, similar to bone but harder, that forms the primary mass of each tooth? A) enamel B) dentin C) cementum D) pulp

Which selection doesnot correctly pair a type of tooth with its description? A) incisors, one or two roots and spoon-shaped B) canines, one root and conical with a pointed tip C) premolars, one or two roots and flat crowns with cusps D) molars, three or more roots and large, broad, flat crowns

Which mesentery covers most of the abdominal organs, extending inferiorly like an apron from the greater curvature of the stomach? A) mesentery proper B) lesser omentum C) greater omentum D) mesocolon

From deep to superficial, what are the tunics of the intraperitoneal portions of the GI tract? A) serosa, muscularis, submucosa, and mucosa B) mucosa, submucosa, muscularis, and serosa C) adventitia, muscularis, submucosa, and mucosa D) mucosa, submucosa, muscularis, and adventitia

In which of the following selections are the GI tract organs or regions correctly matched with the type of epithelium that lines them? A) oral cavity and esophagus; stratified cuboidal B) stomach and small intestine; stratified squamous C) cecum, colon, and rectum; simple columnar D) all of the above

Within the mucous membrane of the GI tract, the layer of areolar connective tissue is called the A) mucosal lining B) lamina propria C) muscularis mucosae D) submucosa

Which tunic of the GI tract typically contains an inner circular layer and an outer longitudinal layer, with the myenteric nerve plexus in between? A) muscularis B) mucosa C) submucosa D) adventitia

The esophagus enters the abdominal cavity through an opening in the diaphragm, the ____________, before it connects to the stomach. A) diaphragmatic foramen B) thoracic canal C) cardiac orifice D) esophageal hiatus